obama he said he'd be back soon. >> chris: senator obama, thanks for talking with us. >> president barack obama: i enjoyed it. >> chris: don't be a stranger. >> president barobama: i won't. >> chris: but that was april 27, 2008. it has now been 1,617 days since the president's last appearance and, although senator biden appeared on fox news sunday 35 times, it has been 1,841 days since the vice president last talked with us. in the meantime, we and you have had a lot of questions that have gone unanswered. we'll invite them, again, for next sunday. up next, with the first presidential debate now three days away, we'll ask our sunday group what to look for, wednesday night. ♪ it's a game changer ♪ it means cleaner, cheaper american-made energy. but we've got to be careful how we get it. design the wells to be safe. thousands of jobs. use the most advanced technology to protect our water. billions in the economy. at chevron, if we can't do it right, we won't do it at all. we've got to think long term. we've got to think long term. ♪ we've got to think long term. we've got to think lon